Excellent Cooperation between Carboxyl-Substituted Porphyrins, k-Carrageenan and AuNPs for Extended Application in CO2 Capture and Manganese Ion Detection

Significant tasks of the presented research are development multifunctional materials capable both to detect/capture carbon dioxide and monitor toxic metal ions from waters, thus contributing maintaining a sustainable clean environment. The purpose this work was synthesize, characterize (NMR, FT-IR, UV-Vis, Fluorescence, AFM) exploit optical emission properties carboxyl-substituted A3B porphyrin, 5-(4-carboxy-phenyl)-10,15,20-tris-(4-methyl-phenyl)–porphyrin, based on it, develop novel composite material able adsorb dioxide. This porphyrin-k-carrageenan can capture CO2 in ambient conditions with performance 6.97 mmol/1 g adsorbent. Another aim our extend porphyrin- k-carrageenan material’s functionality toward Mn2+ detection polluted waters medical samples, relying its synergistic partnership gold nanoparticles (AuNPs). plasmonic porphyrin-k-carrageenan-AuNPs detected range concentration 4.56 × 10−5 M 9.39 (5–11 mg/L), which be useful for monitoring health humans exposed water sources or those who ingested high dietary manganese.